The glossary and index both print out the alphabet as if they were sections in the table of contents in a PDF. Like.... Glossary A B C D E F .... The letters should't be printed like that in the TOC, it should just be "Glossary" and "Index" for the chapter headings.
This is a bug in Publican itself; moving upstream.
Please supply a URL (source, srpm, etc) to a book that has this for me to test on.
A fix for this shipped in Publican 4.1.0.